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Flashcards in Cardiovascular Deck (392)
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1

What two structures does the truncus arteriosus give rise to?

ascending aorta and pulmonary trunk

2

What does the bulbus cordis give rise to?

smooth muscle outflow tract of left and right ventricles

3

What does the primitive atria give rise to?

trabeculated part of left and right atria

4

What does the primitive ventricle give rise to?

trabeculated part of left and right ventricle

5

What does the primitive pulmonary vein give rise to?

smooth muscle part of left atrium

6

What does the left horn of the sinus venosus give rise to?

coronary sinus

7

What does the right horn of the sinus venosus give rise to?

smooth muscle part of right atria

8

What two structures make up the superior vena cava?

right common cardinal vein

right anterior cardinal vein

9

By how many weeks into embryological development does the heart begin beating?

4 weeks

10

What protein is defective in Kartagener Syndrome?

Dynein

11

What is the name of the structure that embryologically connects the left and right atria?

foramen primum

12

What structure originally separates the left from the right atria?

foramen primum

13

What structure forms in the septum primum?

foramen secundum

14

What develops as the foramen secundum maintains the left to right shunt?

septum secundum

15

What structure is left over after the septum secundum covers the foramen secundum?

foramen ovale

16

What structure forms the valve of the foramen ovale?

septum primum

17

What two structures fuse to form the atrial septum?

septum primum and septum secundum

18

What causes a patent foramen ovale?

failure of septum primum and septum secundum to fuse

19

What can a patent foramen ovale lead to?

paradoxical emboli

20

Does a VSD most commonly occur in the muscular or membranus septum?

membranus

21

What two ridges fuse to form the aorticopulmonary septum?

bulbar ridges and truncal ridges

22

What are the aortic and pulmonary valves derived from?

endocardial cushions of the outflow tract

23

What are the mitral and tricuspid valves derived from?

fused endocardial cushions of the AV canal

24

What is Ebsteins Anamoly?

tricuspid valve leaflets are attached to RV

25

What weeks does hematopoiesis occur in the yolk sac?

3-8 week

26

What weeks does hematopoiesis occur in the liver?

6th week to birth

27

What weeks does hematopoiesis take place in the spleen?

10th - 28 weeks

28

What weeks does hematopoiesis occur in the bone marrow?

18 weeks to adult

29

What is the PO2 of blood in the umbilical vein?

30 mm Hg

30

What would a pulse oximeter of fetal blood read?

80%